Mixer and vaporizer for explosive-engines



No. 6|l,34l. Patented Sept. 27, |898` G. W. STARR J. H. GOGSWELL. MIXER AND VAPURIZER FOR EXPLUSIVE ENGINES.

(Application med Aug. 1o, 1897.) (N0 Model.)

N w l Q kg Re 1Q m w m if W /m 'l N n v Ns Q w i fffff u -w No QQ m m n l "o M A Lt] H D NiTRD STATES ATRT GEORGE wATsoN sTARR AND JOHN HENRY OOGSWELL, OF HAVANA, ILLINOIS. i

SPECIFICATION forming part of" Letters Patent No. 611,341, dated September 27, 1898.

i Application filed August 10, 1,897. Serial No. 647.730. (No model.) Y

To a/ZZ whom it may concern: j

Be it Aknown that we, GEORGE VATSON STARR and JOHN HENRY CocswELL, citizens of the United States," residing at Havana, in the county of Mason and State of Illinois, have invented certain new and useful Improvements in Mixers and Vaporizersfor Explosive- Gas Engines; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements in attachments for gasolene-engines, and especially to a vaporizeror mixer whereby the gasolene may become suitably mixed with air and vaporized before entering the combustion-chamber of the engine,

suitable, means being provided for regulating the supply of air and gasolene in proportion to the variation of the load or work of the` engine.

A further part of the invention resides in the provision of means whereby the surplus gasolene which is not taken up by the inrushing air, coming in contact with the gasolene which is fed through overflowing pipes, may be conveyed back to a storage-reservoir, and in the mechanism shown, in which the stem of the induction-valve telescopes over rthe outlet of the supply-pipe from the gasolene-tank.

To these ends and'to such others as the invention may pertain the same consists, furl ther, in the novel construction, combination,

and adaptation of the parts, as-will be hereinafter more fully described andthen Aspecifically defined in the appended claims."

Our invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, and in which drawings similar letters of reference indicate like parts throughout the several views, in which- Figure 1 is a central vertical sectional view through our improved mixer. Fig. 2 is a central vertical section through our improved mixer and gasolene-supply cup, the view being in a plane at right angles to that of Fig. l. i Reference now being had to the details of tlfe drawings by letter, A designates the valvechamber, in which is a port A, leading to the main :cylinder of the engine, to which the valve-chamber is secured.

B is the main suction-valve, having a stem B', and C is a guide for the said stem and is a part of the casing of the valve-chamber.

D is a shell which is suitably secured to the valve-chamber, and between the inner walls of which and the guide for the said pistonstemis formed an air-chamber in which the air and gasolene` are mixed before passing through the ports d and on through the suction-valve to the combustion-chamber of the engine,fwhich is not shown. The upper end of said shell l) is apertured to form a support for the sliding stem E, which is actuated by a governor mechanism to regulate the throw of the suction-valve, which construction of governing mechanism is not illustrated, as it is not claimed as a part of the present invention, as we have been granted Letters Patent No. 585,127 for such construction.

A suitable shell F surrounds the shell D, forming an air-chamber G, into which the outside air is drawn through the apertures G', thence through apertures G2 at each stroke of the piston to supply the mixed air and gas to the combustion-chamber. This air-chamber G also prevents any gasolene from spraying out by reason of the backlash between the strokes of the engine.

Secured to the lower end of the shell F, having preferably screw-threaded connection therewith, is the member H, which has lateral projections to. receive the gasolene-supply valve l and the supply-pipe H', leading from the gasolene-cup. This supply-'valve I` passageway,passes up through the feed-tube K, which has its lower end held in a duct in the casting H. The outer end of the valve I has secured to its end an indicating-pointer I', and L is a dial on which may be arranged numerals. A suitable packing-nut M, through which the stem of the valve I passes, is screwed over one end of the extension of the casting. Y

The lower end of the valve-stem B' is hollowed out, as seen at B2, to receive the upper end of the feed-pipe K, which telescopes therein. On or about the lower end of the said valve-stem B' are the jam-nuts b, against the upper of which bears one end of the coiled spring N, while the upper end of the spring bears against the lower end of the guide C. The spring is provided for the purpose of seating the valve B after the latter has been raised by suction caused by the partial vacuum in the engine-cylinder.

O is a gasolene-supply cup mounted on the .pipe R, which through the union S is connected to the pipe H'. Mounted in the said cup is the pipe O', which is solid a portion of its length, and to the upper threaded end of said pipe is adapted to be connected a pipe which conveys the gasolene from a pump (not shown) to the bore OG, from which it enters the said cup through the lateral apertures O2. The upper end of the cup has fitted thereto a cap Q, which is held securely against the packing Q', interposed between the upper edge of the cylindrical portion of the cup and the cap, by means of the nut q. The lower portion of the said pipe O' has an aperture O7, leading into the bore O8, whereby the gasolene is allowed to flow from the cup into pipe R and thence to and through the pipe K. The object in having the pipe O' constructed as illustrated and described is to cause a steady flow of gasolene to the vaporizer, as the momentum of the gasolene as it comes from the pump is broken in coming in contact with the bottom of the bore O6, after which the gasolene is deflected laterally and through the apertures O2 and runs down in the cup and through the aperture O7. It is obvious that if the gasolene ,entered directly into the body of the gasolene-cup it would be in a more or less state of agitation and the pressure at the feeding-valve would not be constant, which would causea pulsating How of gasolene down the feeding-tube K.

Leading away from the upper end of the cup is the pipe O3, which is provided to carry away the surplus gasolene and convey it to a supply-tank, from which it may be again pumped to the cup O. A pipe R' communicates between the space K' about the tube K and the pipe O3, whereby the surplus gasolene which runs down on the outside of the pipe K may return to the tank.

In operation the gasolene enters the cup through the apertures O2. The valve I is slightly opened, which allows the gasolene to flow up in the tube K and overflow at its upper end and run down on its outer surface. When a partial vacuum is formed in the engine-cylinder, to which our apparatus is attached, the suction will cause the valve B to rise up, and with it the stem B', which is hollowed out at its lower end and telescopes over the tube K. As the stem rises more or less of the surface of the pipe down which the gasolene is iiowing will be exposed to the inrushing air, which enters through the apertures G' and G2, and the gasolene will be carried with the iniiowing air up through the apertures d' and, becoming thoroughly mixed, enter the cylinder of the engine through the aperture or port A', where the supply of mixed gasolene and atmosphere is in readiness to be compressed by a return movement of the plunger and then exploded. On the return stroke of the piston of the engine the valve B will be seated, being aided by the tension of the spring N, which is under tension, as the stem B' rises.

From the foregoing, taken in connection with the drawings, it will be understood that the higher the stem B' is allowed to work, the limit of its movement being regulated by the governor mechanism, the more of the pipe K which is covered with gasolene will be exposed to the inrushing air and taken to the engine-cylinder- Having thus described our invention, what we claim to be new, and desire to secure by Letters Patent, is-

1. In a mixer or vaporizer for explosive-gas engines,the combination with the valve-chamber, valve and stem therein, the lower end of the said valve-stemfhollowed out, of the gasolene-feed pipe, over which the lower end of the said stem telescopes, asand for the purpose set forth.

2. In a mixer or vaporizer for explosive-gas engines, the valve-chamber, valve and seat therefor, the Valve-stem with its lower end hollowed out, the guide C, in which said stem works, the jam-nuts on the hollow end of the stem, and the spring interposed between the same and the lower end of the guide C, combined with the gasolene-feed pipe, over which the lower end of the stem works for the purpose set forth.

3. In a mixer or vaporizer for explosive-gas engines, the combination with the valve and chamber, the valve and stem with hollow end, of the shell D and member H, of the gasolenefeed tube mounted in the latter, and communicating with a valve-regulated duct, of the shell F, having screw-threaded connection with the said member, and casing D, as shown and described.

4. In combination with the vaporizing apparatus described, the gasolene-supply cup,

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the tube mounted therein, which tube has a In testimony whereof We affix our signabore at each end with lateral openings into tures in presence of tWo Witnesses.

the said bores, the bore at the upper end GEORGE WATSON STARR.

adapted t0 communicate with a supply-pipe, JOHN HENRY OOGSWELL. 5 and its lower end communicating with at pipe Witnesses;

leading to the mixing-chamber, as shown and E. ROBESON,

for the purpose set forth.

DOUGLAS WRIGHT. 

